Because it will grow new branches, so in order to avoid the branches of branches being too long, of course, in addition to this reason, it is also because its flowers are relatively large and will open in the new branches, while the old branches rarely bloom, so we need to pick two or three hearts between May and July. If the heart is removed too early, it may affect the development of the root system, may make the seedlings weak, and some of the later growth will also be affected. So it's better to be late and let it grow fully, not too early. If the heart picking is too early, the seedlings have four or five real leaves, its vigorous growth is just beginning, at this time, if we carry out the heart picking too early, it will give a serious blow to the flowers that just started their own growth path.
The object of heart picking is excessive branches or useless branches, both of which are unnecessary, because they will not only lead to the shape of the plant is not beautiful, but also affect the flowering and fruit of other branches.
Only two pairs of buds can be left at the base of the new branch each time the heart is removed. For those who thrive, they won't be able to take heart again after July. Plants that grow thin and not strong don't need to pick their hearts so often
In addition, we need to cut off the withered branches, diseased roots and overcrowded branches from the base after the flower withers in the Spring Festival. In this way, the nutrients will also be gathered together, so that the shape of the sub plants will be more beautiful and the whole will be cleaner.
It's not appropriate to remove the heart in winter. If you want to trim the whole plant, you should also follow its habits. Not all woody plants are suitable for winter pruning. For example, spring flowers in spring, winter is not very suitable for pruning, at this time pruning will cut off some buds, spring flowers will not be very good.
